"I've had a look at the soaker for you. The main leak is coming from the mechanism in the photos, the part that pulls back and opens the valve to let the water out. There's a orange rubber piece on the stem which I think acts as a stop, to prevent damage to the reservoir from people pulling tight in the trigger, that said, the damage is likely due to the metal rod wearing away the plastic tube."

I have included the photos he took. Can the orange bit be fixed/replaced? The really concerning thing is that the other 1500 leaks from the nozzle as well but it still fires where as this one doesn't. I hope I am not doomed to forever recieve broken soakers.

Unfortunately I have either lost the pictures and/or the original repair thread for my CPS 1500, you're going to need some machinist's tools (Tap + drill press at the very least) to make a new hole in the firing pin. Plus a cauter pin, and a new o ring to replace the old worn out one - and no more leak!

It is a bit of a pain but I have done it twice and I still have both CPS 1500's in working order.

Yes, I removed the firing pin. I cut/ground off the end of the pin to remove the whole assembly through the firing chamber. That's why I had to drill a hole and insert a cauter pin in the end (that's the little hairclip looking thing at the end holding the whole thing together).

Every single super soaker I fixed this way had the same problem- that tiny, tiny little o ring inside wore out and with the seal blown, the gun leaked like crazy out of the firing chamber. Replace the o ring and lubricate, gun works like brand new. The real problem is that there is no way to replace the o ring without removing the firing pin. I came up with a solution to that problem. Cost me a few nickels worth of parts out of a large box of assorted size o rings and another box of cauter pins (thank you princess auto!)

You have probably seen the other thread but I'm posting this here anyways:https://flic.kr/s/aHsm8gFCz4This is the firing valve repair on good ol' CPS 1500 number 2. Or maybe it is number 3? It's the second repair I've done like this on a 1500, anyways.